When I've purchase your plugin and download about 20 items and then install the most important for me - it not appear at WP dashboard at all. Then I've install "all-in-one" and again nothing there! Only then I think that maybe all those plugins is just addons for some free plugin and find it at WP plugins repository.
Thus will be nice to add "My Account - Purchases" tabl at top a small reminder that first of all client need to install the default free MetaBox plugin from WP repository.
The same about "MB Custom Post Types & Custom Taxonomies" because it is absent at "Purchases" list.